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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4111093a9207565fb70b14635fb554b2dcca602e630b80d7bdb1358c99178d51' 
  AND token = '4gJvIVy4NTntXQeeE4P4Z4eAKP9DXVkRcnR4XToAr1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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