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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '906148dd41a4fc5ad2d09901dc42a1249d75df6564046a64887fb78c760a979e' 
  AND token = 'PA2DY0rMrGb5ZZ3aEDWolNJUF2kjy2w0Eb2KqwnEMsM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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