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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed180bd8811bf6a105bc5a5dcc65e25cde66a13ec5e9cab0b32314803b24f8f1' 
  AND token = 'Bs+G4XzgxwtChTUX1VRIHm/md/mpRQr25sOCWK8FHes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00077

JSON explain

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