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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e60b3e498f07e772b2f2ec7f150bf1525465e903f229b11cc0183f11e799930' 
  AND token = 'ovuyvqWChnA0aFDiMuyTEQnQ/OuG2nGBOutiRd+rUVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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