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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b72607907b34bcfa4fba4f661c29850329cd606028b0cb0b607da1a3d60fe05b' 
  AND token = 'q08pe70ntceT5Cd4dfp0gq1g3jlQjdbS67Zx0j3ecb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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