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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a4b26d30e0992f956c1b95d70d4e2c362377a664299bdf3513456e0c8d3b077c' 
  AND token = 'bpZ2y4oCaN0MgbI32Ttw4kxj8csFwnP2LqBUtxGM/uc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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