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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64f0425d6639b4d72cc93fe9f3e401cfe3ed6b5827739a724e9bd091a5592e1b' 
  AND token = 'f+kw49dt7CpFNOB/09fz1vp6vLr3CQhQn8WZp8luRC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}