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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '907490a6f599ce940bdde1871c6dacf2e51d631a6f88357ab4a8f81d663bfba5' 
  AND token = 'ONrOA9dWx3h9H1N4b0jC8jQJxjN8/h8A1cAlFO9l5bQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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