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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13f766f2c217dc7a2b289d51e54f9d194ee2952dcf008370c1c8badaf451b7a7' 
  AND token = 'CdvMwfqTrQ77ohK9t/EhUvBIw50MG4TlW/gSh2Wqhp4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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